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<p>&#x5C3D;&#x7BA1;&#x5F88;&#x4E0D;&#x50CF;&#xFF0C;&#x4F46;&#x662F;&#x5728;&#x5927;&#x591A;&#x64CD;&#x4F5C;&#x7CFB;&#x7EDF;&#x4E2D;&#xFF0C;&#x6807;&#x51C6;&#x8F93;&#x5165;&#x8F93;&#x51FA;&#x6D41; <code>stdin</code> &#x548C; <code>stdout</code> &#x867D;&#x7136;&#x53EB;&#x505A;&#x300C;&#x6D41;&#x300D;&#xFF0C;&#x4F46;&#x5B83;&#x4EEC;&#x90FD;&#x6709;&#x6587;&#x4EF6;&#x7684;&#x63A5;&#x53E3;&#x3002;&#x6211;&#x4EEC;&#x540C;&#x6837;&#x4E5F;&#x4F1A;&#x5C06;&#x5B83;&#x4EEC;&#x5B9E;&#x73B0;&#x6210;&#x4E3A;&#x6587;&#x4EF6;&#x3002;</p>
<p>&#x4F46;&#x662F;&#x4E0D;&#x7528;&#x62C5;&#x5FC3;&#xFF0C;&#x4F5C;&#x4E3A;&#x6587;&#x4EF6;&#x7684;&#x8BB8;&#x591A;&#x529F;&#x80FD;&#xFF0C;<code>stdin</code> &#x548C; <code>stdout</code> &#x90FD;&#x4E0D;&#x4F1A;&#x652F;&#x6301;&#x3002;&#x6211;&#x4EEC;&#x53EA;&#x9700;&#x8981;&#x4E3A;&#x5176;&#x5B9E;&#x73B0;&#x6700;&#x7B80;&#x5355;&#x7684;&#x8BFB;&#x5199;&#x63A5;&#x53E3;&#x3002;</p>
<h3 id="&#x8FDB;&#x7A0B;&#x6253;&#x5F00;&#x7684;&#x6587;&#x4EF6;">&#x8FDB;&#x7A0B;&#x6253;&#x5F00;&#x7684;&#x6587;&#x4EF6;</h3>
<p>&#x64CD;&#x4F5C;&#x7CFB;&#x7EDF;&#x9700;&#x8981;&#x4E3A;&#x8FDB;&#x7A0B;&#x7EF4;&#x62A4;&#x4E00;&#x4E2A;&#x8FDB;&#x7A0B;&#x6253;&#x5F00;&#x7684;&#x6587;&#x4EF6;&#x6E05;&#x5355;&#x3002;&#x5176;&#x4E2D;&#xFF0C;&#x4E00;&#x5B9A;&#x5B58;&#x5728;&#x7684;&#x662F; <code>stdin</code> <code>stdout</code> &#x548C; <code>stderr</code>&#x3002;&#x4E3A;&#x4E86;&#x7B80;&#x4FBF;&#xFF0C;&#x6211;&#x4EEC;&#x53EA;&#x5B9E;&#x73B0; <code>stdin</code> &#x548C; <code>stdout</code>&#xFF0C;&#x5B83;&#x4EEC;&#x7684;&#x6587;&#x4EF6;&#x63CF;&#x8FF0;&#x7B26;&#x6570;&#x503C;&#x5206;&#x522B;&#x4E3A; 0 &#x548C; 1&#x3002;</p>
<h3 id="stdout"><code>stdout</code></h3>
<p>&#x8F93;&#x51FA;&#x6D41;&#x6700;&#x4E3A;&#x7B80;&#x5355;&#xFF1A;&#x6BCF;&#x5F53;&#x9047;&#x5230;&#x7CFB;&#x7EDF;&#x8C03;&#x7528;&#x65F6;&#xFF0C;&#x76F4;&#x63A5;&#x5C06;&#x7F13;&#x51B2;&#x533A;&#x4E2D;&#x7684;&#x5B57;&#x7B26;&#x901A;&#x8FC7; SBI &#x8C03;&#x7528;&#x6253;&#x5370;&#x51FA;&#x53BB;&#x3002;</p>
<h3 id="stdin"><code>stdin</code></h3>
<p>&#x8F93;&#x5165;&#x6D41;&#x8F83;&#x4E3A;&#x590D;&#x6742;&#xFF1A;&#x6BCF;&#x5F53;&#x9047;&#x5230;&#x7CFB;&#x7EDF;&#x8C03;&#x7528;&#x65F6;&#xFF0C;&#x901A;&#x8FC7;&#x4E2D;&#x65AD;&#x6216;&#x8F6E;&#x8BE2;&#x65B9;&#x5F0F;&#x83B7;&#x53D6;&#x5B57;&#x7B26;&#xFF1A;&#x5982;&#x679C;&#x6709;&#xFF0C;&#x5C31;&#x8FDB;&#x4E00;&#x6B65;&#x83B7;&#x53D6;&#xFF1B;&#x5982;&#x679C;&#x6CA1;&#x6709;&#x5C31;&#x7B49;&#x5F85;&#x3002;&#x76F4;&#x5230;&#x6536;&#x5230;&#x7EA6;&#x5B9A;&#x957F;&#x5EA6;&#x7684;&#x5B57;&#x7B26;&#x4E32;&#x624D;&#x8FD4;&#x56DE;&#x3002;</p>
<h4 id="&#x5916;&#x90E8;&#x4E2D;&#x65AD;">&#x5916;&#x90E8;&#x4E2D;&#x65AD;</h4>
<p>&#x5BF9;&#x4E8E;&#x7528;&#x6237;&#x7A0B;&#x5E8F;&#x800C;&#x8A00;&#xFF0C;&#x5916;&#x90E8;&#x8F93;&#x5165;&#x662F;&#x968F;&#x65F6;&#x4E3B;&#x52A8;&#x8BFB;&#x53D6;&#x7684;&#x6570;&#x636E;&#x3002;&#x4F46;&#x662F;&#x4E8B;&#x5B9E;&#x4E0A;&#x5916;&#x90E8;&#x8F93;&#x5165;&#x901A;&#x5E38;&#x65F6;&#x95F4;&#x77ED;&#x6682;&#x4E14;&#x4E0D;&#x4F1A;&#x7B49;&#x5F85;&#xFF0C;&#x9700;&#x8981;&#x64CD;&#x4F5C;&#x7CFB;&#x7EDF;&#x7ACB;&#x5373;&#x5904;&#x7406;&#x5E76;&#x7F13;&#x51B2;&#x4E0B;&#x6765;&#xFF0C;&#x518D;&#x7B49;&#x5F85;&#x7A0B;&#x5E8F;&#x8FDB;&#x884C;&#x8BFB;&#x53D6;&#x3002;&#x6240;&#x4EE5;&#xFF0C;&#x6BCF;&#x4E00;&#x4E2A;&#x952E;&#x76D8;&#x6309;&#x952E;&#x5BF9;&#x4E8E;&#x64CD;&#x4F5C;&#x7CFB;&#x7EDF;&#x800C;&#x8A00;&#x90FD;&#x662F;&#x4E00;&#x6B21;&#x77ED;&#x6682;&#x7684;&#x4E2D;&#x65AD;&#x3002;</p>
<p>&#x800C;&#x5728;&#x4E4B;&#x524D;&#x7684;&#x5B9E;&#x9A8C;&#x4E2D;&#x64CD;&#x4F5C;&#x7CFB;&#x7EDF;&#x4E0D;&#x4F1A;&#x56E0;&#x4E3A;&#x4E00;&#x4E2A;&#x6309;&#x952E;&#x5C31;&#x5D29;&#x6E83;&#xFF0C;&#x662F;&#x56E0;&#x4E3A; OpenSBI &#x9ED8;&#x8BA4;&#x4F1A;&#x5173;&#x95ED;&#x5404;&#x79CD;&#x5916;&#x90E8;&#x4E2D;&#x65AD;&#x3002;&#x4F46;&#x662F;&#x73B0;&#x5728;&#x6211;&#x4EEC;&#x9700;&#x8981;&#x5C06;&#x5176;&#x6253;&#x5F00;&#xFF0C;&#x6765;&#x63A5;&#x53D7;&#x6309;&#x952E;&#x4FE1;&#x606F;&#x3002;</p>
<p></p><p class="code-label">os/src/interrupt/handler.rs</p><p></p>
<pre><code class="lang-rust"><span class="hljs-comment">/// &#x521D;&#x59CB;&#x5316;&#x4E2D;&#x65AD;&#x5904;&#x7406;</span>
<span class="hljs-comment">///</span>
<span class="hljs-comment">/// &#x628A;&#x4E2D;&#x65AD;&#x5165;&#x53E3; `__interrupt` &#x5199;&#x5165; `stvec` &#x4E2D;&#xFF0C;&#x5E76;&#x4E14;&#x5F00;&#x542F;&#x4E2D;&#x65AD;&#x4F7F;&#x80FD;</span>
<span class="hljs-keyword">pub</span> <span class="hljs-function"><span class="hljs-keyword">fn</span> <span class="hljs-title">init</span></span>() {
    <span class="hljs-keyword">unsafe</span> {
        <span class="hljs-keyword">extern</span> <span class="hljs-string">&quot;C&quot;</span> {
            <span class="hljs-comment">/// `interrupt.asm` &#x4E2D;&#x7684;&#x4E2D;&#x65AD;&#x5165;&#x53E3;</span>
            <span class="hljs-function"><span class="hljs-keyword">fn</span> <span class="hljs-title">__interrupt</span></span>();
        }
        <span class="hljs-comment">// &#x4F7F;&#x7528; Direct &#x6A21;&#x5F0F;&#xFF0C;&#x5C06;&#x4E2D;&#x65AD;&#x5165;&#x53E3;&#x8BBE;&#x7F6E;&#x4E3A; `__interrupt`</span>
        stvec::write(__interrupt <span class="hljs-keyword">as</span> usize, stvec::TrapMode::Direct);

        <span class="hljs-comment">// &#x5F00;&#x542F;&#x5916;&#x90E8;&#x4E2D;&#x65AD;&#x4F7F;&#x80FD;</span>
        sie::set_sext();

        <span class="hljs-comment">// &#x5728; OpenSBI &#x4E2D;&#x5F00;&#x542F;&#x5916;&#x90E8;&#x4E2D;&#x65AD;</span>
        *PhysicalAddress(<span class="hljs-number">0x0c00_2080</span>).deref_kernel() = <span class="hljs-number">1</span> &lt;&lt; <span class="hljs-number">10</span>;
        <span class="hljs-comment">// &#x5728; OpenSBI &#x4E2D;&#x5F00;&#x542F;&#x4E32;&#x53E3;</span>
        *PhysicalAddress(<span class="hljs-number">0x1000_0004</span>).deref_kernel() = <span class="hljs-number">0x0bu8</span>;
        *PhysicalAddress(<span class="hljs-number">0x1000_0001</span>).deref_kernel() = <span class="hljs-number">0x01u8</span>;
    }
}
</code></pre>
<p>&#x8FD9;&#x91CC;&#xFF0C;&#x6211;&#x4EEC;&#x9700;&#x8981;&#x6309;&#x7167; OpenSBI &#x7684;&#x63A5;&#x53E3;&#x5728;&#x6307;&#x5B9A;&#x7684;&#x5730;&#x5740;&#x8FDB;&#x884C;&#x914D;&#x7F6E;&#x3002;&#x597D;&#x5728;&#x8FD9;&#x4E9B;&#x5730;&#x5740;&#x90FD;&#x5728;&#x6587;&#x4EF6;&#x7CFB;&#x7EDF;&#x6620;&#x5C04;&#x7684;&#x7A7A;&#x95F4;&#x5185;&#xFF0C;&#x5C31;&#x4E0D;&#x9700;&#x8981;&#x518D;&#x4E3A;&#x5176;&#x5355;&#x72EC;&#x5EFA;&#x7ACB;&#x5185;&#x5B58;&#x6620;&#x5C04;&#x4E86;&#x3002;&#x5F00;&#x542F;&#x4E2D;&#x65AD;&#x4F7F;&#x80FD;&#x540E;&#xFF0C;&#x4EFB;&#x4F55;&#x4E00;&#x4E2A;&#x6309;&#x952E;&#x90FD;&#x4F1A;&#x5BFC;&#x81F4;&#x7A0B;&#x5E8F;&#x8FDB;&#x5165; <code>unimplemented!</code> &#x7684;&#x533A;&#x57DF;&#x3002;</p>
<h4 id="&#x5B9E;&#x73B0;&#x8F93;&#x5165;&#x6D41;">&#x5B9E;&#x73B0;&#x8F93;&#x5165;&#x6D41;</h4>
<p>&#x8F93;&#x5165;&#x6D41;&#x5219;&#x9700;&#x8981;&#x914D;&#x6709;&#x4E00;&#x4E2A;&#x7F13;&#x51B2;&#x533A;&#xFF0C;&#x6211;&#x4EEC;&#x53EF;&#x4EE5;&#x7528; <code>alloc::collections::VecDeque</code> &#x6765;&#x5B9E;&#x73B0;&#x3002;&#x5728;&#x9047;&#x5230;&#x952E;&#x76D8;&#x4E2D;&#x65AD;&#x65F6;&#xFF0C;&#x8C03;&#x7528; <code>sbi_call</code> &#x6765;&#x83B7;&#x53D6;&#x5B57;&#x7B26;&#x5E76;&#x52A0;&#x5165;&#x5230;&#x7F13;&#x51B2;&#x533A;&#x4E2D;&#x3002;&#x5F53;&#x9047;&#x5230;&#x7CFB;&#x7EDF;&#x8C03;&#x7528; <code>sys_read</code> &#x65F6;&#xFF0C;&#x518D;&#x76F8;&#x5E94;&#x4ECE;&#x7F13;&#x51B2;&#x533A;&#x4E2D;&#x53D6;&#x51FA;&#x4E00;&#x5B9A;&#x6570;&#x91CF;&#x7684;&#x5B57;&#x7B26;&#x3002;</p>
<p>&#x90A3;&#x4E48;&#xFF0C;&#x5982;&#x679C;&#x9047;&#x5230;&#x4E86; <code>sys_read</code> &#x7CFB;&#x7EDF;&#x8C03;&#x7528;&#xFF0C;&#x800C;&#x7F13;&#x51B2;&#x533A;&#x5E76;&#x6CA1;&#x6709;&#x6570;&#x636E;&#x53EF;&#x4EE5;&#x8BFB;&#x53D6;&#xFF0C;&#x5E94;&#x8BE5;&#x5982;&#x4F55;&#x8BA9;&#x7EBF;&#x7A0B;&#x8FDB;&#x884C;&#x7B49;&#x5F85;&#xFF0C;&#x800C;&#x53C8;&#x4E0D;&#x6D6A;&#x8D39; CPU &#x8D44;&#x6E90;&#x5462;&#xFF1F;</p>
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